MTD 790 User Manual

Illustrated Parts Manual

Printed In USA

Hydrostatic Lawn Tractor — Model Series 790

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

Form No. 769-07616
(November 17, 2011)

To The Owner

Thank you for purchasing an MTD L awn Tr actor. It was carefully
engineered to provide excellent performance when properly
operated and maintained.

All information in this manual is relative to the most recent
product information available at the time of printing. Please be
aware that this Illustrated Part’s Manual may cover a range of
product specifications for various models.

Table of Contents

5 Style Hood ............................................................. 4

K Style (Troy-Bilt) Hood ........................................... 6

Seat and Fender ...................................................... 8

Front End Steering ..................................................10

Transmission ...........................................................12

Frame and PTO Lift ................................................14

Record Product Information

To ease in ordering replacement parts, please locate the model
plate on the equipment and record the information in the
provided area to the right. You can locate the model plate by
looking beneath the seat.

Components listed and/or illustrated in this manual may not be
applicable to all models. We reserve the right to change product
specifications, designs and equipment without notice and
without incurring obligation.

Throughout this manual, all references to right (RH) and left (LH)
are observed from the operating position.

42” Deck ..................................................................16

46” Deck ..................................................................18

Briggs & Stratton Engine Accessories .................. 20

Kohler Courage Engine Accessories ......................21

Wiring Harness Schematic 725-04567F .............. 22

Wiring Harness Schematic 725-04432F .............. 23

Model NuMber

Serial NuMber

Painted Parts

When ordering painted service parts, a four digit color suffix must be added to the part number (e.g. 783-XXXXX-0637).
Please refer to the table below for current color codes:

0637 Black

0709 Dark Green (Bolens, Yard-Man)

0662 Oyster Gray (MTD Gold)

0638 Red (Yard Machines, Huskee, Troy-Bilt, MTD)

0691 Black Jack (MTD Gold, MasterCut)

2

0674 Yellow (Yard-Man)

0650 Metallic Red (White Outdoor)

0629 Silver Flake (MTD Platinum)

04038 Day Orange (Daedong)

04033 Flint Mica (Troy-Bilt XP)

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3

5 Style Hood

48

9

13

36

44

51

14

49

20

1

19

35

17

7

1

8

38

46

47

5

2

3

50

31

6

21

39

37

29

41

22

42

43

21

30

24

23

33

A

28

34

26

16

25

18

4

27

14

15

40

A

10

12

45

32

11

4

5 Style Hood

Ref.

No.

1 710-04593 Screw, 5/16-18 x .375

2 710-0751 Hex Screw, 1/4-20 x .620

3 712- 0 4 0 64 Flangelock Nut, 1/4-20

4 710-044 84 Screw, 5/16-18 x .750

5 731-04949A Grill Lens

6 72 5 - 0157 Cable Tie

7 925- 0963 Lamp

8 783-05454 Hood Pivot Bracket

9 783-05683 Hood

10 738- 0 4 091A Shoulder Screw, 5/16-18 x .43 x .29

11 783- 05327B Left Support Pivot Bracket

12 783-05328A Right Support Pivot Bracket

13 710 -04 483 Screw, 1/4-20 x .500

14 710 - 05070 Screw, 1/4-20 x .500

15 710 - 0604A Screw, 5/16-18 x .625

16 712- 0 4063 Flangelock Nut, 5/16-18

17 783-05685 Grill

18 783-07083 Gas Tank Support Bracket

19 910 - 0224 Screw, #10-16 x .500

20 731-05265 Choke Plug

21 710 -1652 Tap Screw, 1/4-20, 0.625

22 710 -3144 Hex Screw, 3/8-16 x 2.0

23 710-3025 Hex Screw, 5/16-18 x .625

24 931-07770 Dash, Upper

25 741-0587 Bearing, .628 ID x 1.36

26 783-06785A Bracket, Steering Support

Part No. Description

931- 08426 Dadh, Upper RMC

Ref.

No.

27 7 8 3 -0 6 811 Dash, Lower

28 750-04465B Flange Spacer, .390 x .671 x 1.095

29 746- 0 4367 Throttle/Choke Cable

30 683-04766 Transmission Speed Latch, RMC

31 683-04448 Battery Assembly Rod

32 726 -0230 Cable Tie

33 747-05398 Speed Control Rod

34 783-06823 Speed Latch Tab

35 951-04304 1.36 Gallon Fuel Tank

36 92 5 -1745A Key

37 736-3006 Lock Washer, 1/4

38 751-12089-28 Hose Vent, 3/16 EPA

39 710 - 0778 Hex Washer Screw, 1/4-20 x 1.50

40 712- 04 0 65 Flangelock Nut, 3/8-16

41 731-07885B Shift Lever

42 731- 07966 Index Control

43 732- 04877 Compr. Spring, .72 OD x .78

44 925-04227B Key Switch Module

45 951-1217 9A Fuel Cap, 2.25”

46 751-12118 Rollover Valve

47 735-04081 Rubber Grommet, 23 x 3.55

48 731-05522A† Hood cover

49 731-05232 Ammeter Plug

50 710-0895 Screw, 1/4-15 x .750

51 731- 05078C† Dash Collar

— 725-04 432G Harness, LT-5, RMC,Dual

Part No. Description

925-04659 Key Switch 3 Position

†If Equipped

NOTE: Tractor features vary by model. NOT all parts listed above and pictured on the previous page are standard equipment.

5

K Style (Troy-Bilt) Hood

9

14

49

53

35

17

3

2

39

50

34

16

26

52

48

8

19
30

33

4

56

7

21

31

29

54

B

B

27

38

37

41

28

40

55

20

36

37

13

15

41

40

6

7

38

42

45

1

32

A

5

18

51

27

23

25

22

A

24

B

16

10

1

12

11

44

46

47

43

6

K Style (Troy-Bilt) Hood

Ref.

No.

1 710-044 84 Screw 5/16-18 x .750

2 710-05281 Screw, #12-16 x 1.25

3 731- 0640 4 K-Style Bumper

4 710-05108 Screw, 1/4 x .750

5 72 5 - 0157 Cable Tie

6 925- 0963 Miniature lamp 12V socket

7 731- 060 95 Grill Lens - LH

8 910-0224 Screw, #10-16 x .500

9 731-06194B Hood Scoop

10 738- 0 4 091A Shoulder Screw .43 x .29

11 783-05327B Suppport Bracket LH

12 783-05328A Suppport Bracket RH

13 683-04448 Battery Rod

14 683 -04774 Hood

15 631-04272 Grill

16 710-05070 Screw, 1/4-20 x .500

17 710-04 483 Screw 1/4-20 x .500

18 710 -3144 Hex Screw 3/8-16 x 2.00

19 710 -3025 Hex Screw, 5/16-18 x .625

20 712- 0 4065 Flange Lock Nut 3/8-16

21 931-07770 Dash, Upper

22 783-06823 Speed Latch Tab

23 747- 0539 8 Speed Control Rod

24 750 -04465C Flange Spacer .39 x .671 x 1.095

25 683-04766 Transmission Speed Latch

26 746 - 04367 Throttle/Choke Control Cable

27 710-1652 Tap Screw, 1/4-20, 0.625

28 710-060 4A Screw 5/16-18 x .625

29 741-0587 Bearing, .628 ID x 1.36

30 712- 0 4 063 Flange lock Nut 5/16-18

Part No. Description

731-06096 Grill Lens - RH

746- 0 4 4 0 6 Throttle/Choke Cable w/ Knob

Ref.

No.

31 783-06785A Bracket, Steering Support

32 783-07083† Gas Tank Support Bracket

33 7 8 3 -06 811 Dash, Lower NWNDW

34 925- 04227B Key Switch Module

35 925-1745A Key

36 726-0230† Cable Tie

37 951-04295 Fuel Tank, 2 Gallons, EPA

38 951-12179A Fuel Cap

39 92 5 - 04156 Ammeter Monitor Indicator

40 735- 04081 Rubber Grommet

41 751-12118 Rollover Valve

42 936-3008†† Washer, Flat, .344 x .750 x .120

43 951-10589†† Canister, Carbon, 5 Gallon

44 951-10590†† Filter, Vent, Canister

45 951-10610†† Bracket., Adapter, Canister

46 751-10749†† Hose, Fuel, Low Perm., White

47 751-10750†† Hose, Fuel, Low Perm., Yellow

48 731-05265 Choke Plug

49 710 - 0778 Hex Washer Screw, 1/4-20 x 1.50

50 731-07885B Shift Lever

51 731- 0796 6 Index Control

52 732- 04877 Compr. Spring, .685 OD x .63

53 736-3006 Lock Washer, 1/4

54 747- 05373 Fuel Tank Clamp Rod

55 751-120 89-28 Hose Vent, 3/16 EPA

56 710 -04187 Screw, 1/4-15 x 0.50

— 725-04 432G Harness, LT-5, RMC,Dual

— 725-04469 Harness, Jmpr., Amtr.

Part No. Description

783-06656 Dash, Lower

951-04304 Fuel Tank, 1.36 Gallon, CARB

951-12426 Fuel Cap, CARB

† If Equipped
†† Equipped with CARB Fuel Tank

NOTE: Tractor features vary by model. NOT all parts listed above and pictured on the previous page are standard equipment.

7

Seat and Fender

25

16

26

2

5

14

9

27

9

1

7

14

11

13

15

12

10

19

10

13

8

23

22

20

21

24

4

6

18

17

3

8